Some Internal and External Quality Parameters of Domestic Duck Eggs
Pokazatelji unutrašnjeg i spoljašnjeg kvaliteta jaja domaće patke
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Author
Vekic, Marinko
Jotanovic, Stoja
Savic, Djordje
Keywords
domestic duckegg quality
phenotypic correlation
domaća patka
kvalitet jaja
fenotipska korelacija
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This paper presents result of quality determination of domestic duck eggs in semi-intensive rearing. Average egg weight was 72.70 g, whereas average shell, albumen and yolk weight was 6.21, 42.27 and 24.21 g, respectively, and its proportion 8.57, 58.12 and 33.33%, respectively. Average values for egg shape index, shell thickness, yolk index and color, Haugh unit and albumen index were 71.07%, 0.35 mm, 42.71%, 14.52, 83.81 and 9.63%, respectively. Egg weight was in significant positive correlation with weight of egg main parts, albumen and shell proportion, as well shell thickness. Egg weight, length and width were not correlated with albumen index, yolk index and Haugh units. U radu su prikazani rezultati određivanja pokazatelja spoljašnjeg i unutrašnjeg kvaliteta jaja domaće patke u poluintenzivnom sistemu gajenja. Prosječna masa jaja iznosila je 72,70 g, od čega je masa ljuske, bjelanca i žumanca bila 6,21; 42,27 i 24,21 g, redom, a njihov udio 8,57; 58,12 i 33,33%, redom. Prosječne vrijednosti za indeks oblika, debljinu ljuske, indeks i boju žumanca, Haughove jedinice i indeks bjelanca iznosile su 71,07%; 0,35 mm; 42,71%; 14,52; 83,81 i 9,63%, redom. Pozitivna fenotipska korelacija utvrđena je između mase jaja sa masom ljuske, bjelanca i žumanca, sa udjelom bjelanca i žumanca, te debljinom ljuske. Masa, dužina i širina jaja nisu pokazali korelaciju sa indeksom bjelanca, indeksom žumanca i Haughovim jedinicama.